18. Waves & Sound
Wave Intensity
5:18 minutes
Problem 16b
Textbook Question
Textbook QuestionLASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. A typical LASIK laser emits a 1.0-mm-diameter laser beam with a wavelength of 193 nm. Each laser pulse lasts 15 ns and contains 1.0 mJ of light energy. b. During the very brief time of the pulse, what is the intensity of the light wave?
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